BOSTON, FEB. 25, 2016....An investigation launched in December into the MBTA Retirement Fund has slowed state government's financial reporting and now the lack of audited financials threatens to affect the Commonwealth's bond covenants, subject the state to lawsuits, and draw a critical eye from investors and credit rating agencies.

A six-month examination of the MBTA pension fund by Wall Street whistleblower Harry Markopolos "found accounting and investment reporting practices that he says may overstate the financial health of the transit worker retirement plan by as much as $470 million," the Boston Globe reported in June 2015.